Home / 15,475.48-21,356.61-8,402.35

Finding the Fourth Proportional to 15,475.48, 21,356.61 and 8,402.35

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Solution

The fourth proportional to 15,475.48, 21,356.61 and 8,402.35 is: 11,595.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.48 : 21,356.61 = 8,402.35 : x
  2. Step 2: Convert to fraction form
    15,475.48/21,356.61 = 8,402.35/x
  3. Step 3: Cross multiply
    15,475.48x = 21,356.61 × 8,402.35
  4. Step 4: Simplify right side
    15,475.48x = 179,445,712.03
  5. Step 5: Solve for x
    x = 179,445,712.03/15,475.48
  6. Step 6: Final answer
    x = 11,595.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.